Container for storing and shipping



June l2, 1928. 1,672,904`

F..|.. RANDALL CONTAINER FOR STORING AND SHIPPING Filed April 25, 1925-n W A.

Patented June 12, 'i 192e.

UNITED STATES" FRANK L l' PENNSYLVANIA.

eon'ranrn 'ron aroma .um smrrme.

application nea Aprn as, 1m. serial a. 25,946.

This invention relates to containers' for storing and shipping ice creamand other articles whichshould be maintained at a low Y temperature. v

' 5' The object of this invention is to provide a strong andcomparatively light receptacle having double walls withan air chamber'therebetween, in which a substantially reduced pressure can bemaintained so that the container chamber will be insulated from theouter shell. i'

The features of my invention consist of a metallic outer shellandbottomplate, and an inner metal shell and bottom plate, saidshells and bottomplates being concentric and spaced apart, with an annular ring closingthe space at the up r ends of said Y shells, and a coveri'n 2.o whichwill etectually seal the joints in sai shells as well as the pores ofthe metal so that the intervening annular chamber willmaintain apressure below atmospheric.v

Also toprovide a double walled metallic cover for the container, whichis also provided with'an outer coating of rubber or other suitablematerial adapted to render the -same impervious to air so that a ressurebelow the atmospheric can be malntained 3o therein. l i

` Also to provide means to clamp the cover upon the receptacle..

These and other features ofmy invention are hereinafter set forth andpointed out,l

and'i'are illustrated in the drawin, in which:

The gure is a central vertical section of my improved container.

accompanying In the drawing A Aindicates the outer me-v tallie shell ofthe' container, and A indi.-

cates the bottom plate thereof, which is pro-v vided with an upturnedflange a around the perimeter thereof adapted vto receive thel lower end.of the shell' A. Upon the bottom the .bottom plate A' and down-turnedstops c on the underside of the bottoml late C, so that said disc B'isnot. only itse f maino rubber or othersuitable material whie isimpervious to airl andV outside, I place a covering o tainedsubstantially concentric with the plate A but acts to maintain the innerbot tom-plate C concentric with the outer shell A. The bottom plate C isof ,less diameter than lthe outer shell A, so that the annular llange bthereon is spaced away from said outer shell. Upon the inner bottomplate C is placed an inner metallic shell D which lits inside of theannular flan e b.

Placed -upon the .upper en s of the o ter shell A and inner shell D is aring E of plate metal having down-tur`ned annular llanges e which lapdownwardly over the outer and inner shells, so that when air is'exhausted from. .the space between lthe inner andouter shell, ashereinafter describedithe metallic joints willpbe drawn together.

I provide a nonreturn outlet air'valve F through which air can be drawnfrom the space between the shells. l

In order to seal the metallic joints hereinbefore described, I cover theinterior of the inner shellD with a coating G ofelastic rubber or othermaterial ada ted to resist thepassage of air therethroug said elasticeoatln extending over the metallic bottom p ate, and over the to ring,and over the exterior and Ybottom o the outer shell, and toprotect theelastic coating G, inside hard ruhber material, or other protectivevmaterial, each of said coatingsbeing separately vulcanized in place, sothat all the metallic joints and .interstices are perfectly sealedagainst the passage of airt erethrough, so that when air isexh'austedfrom the space between the metallic shells, a chamber of lowerpressure will be maintained.

Around the upper end of the container I form a shoulder H of theprotective coat' 05 below which I place a metallic band Hupon whichfarelug ears H? to which clamp rods J are pivoted, upon which thumb nuts Y Jare threaded.

To close'the upper end of the container 100 provide a hollow coverconsisting of'a metallic plate, K, having an annular shoulder 'cconcentric with the inner wall of the container, and around theperiphery thereof is a flange lc'. Upon the late K 1s placed an up rplateL havingfa" own-turned peri hr a era flange L which fits around theannu ar flange' conthe plate K. The metal plates Kand L thus v'form anair chamber. The

Ameta1lic c over structure isthen coated with 110 so or other article,desired to be stored canbe placed in this receptacle, and that the same'at the` ends thereof, indicated by broken lines, to receive the clampbolts J, and againstA which the thumb-nuts J can be screwed to securelyfasten the cover upon the receptacle. Thecross-bar P, is secured inplace upon the cover by means of a stri N of the protection material,which holds .the cross-bar P, in place when the nuts J are loosened andthe bolts JV swin out of engagement therewith. The crossar P is formedfor use as a handle as'shown in the drawing, b 1 means of which thecover can be lifted o of the rece tacle.

The cover is provide with a non-return valve R through which air can beexhausted from the chamber in the cover. The elastic coating M. and thehard rubber protection covering N are each vulcanized in place, so thatthe same is impervious to the passage of air therethrough, and apressure below atmospheric can be maintained therein.

It will be obvious that a can of ice cream,

will be securely insulated lfrom thev atmosphere. i@

Having thus fully described the construction of my invention so thatothers can utilize the same, what I claimas new and desire to secure bLetters Patent is:

1."In a doub e walled container, metallic i ing vulcanized in place,whereby said elastic rubber covering will be protected.

2. In an article of the class described, inner and outer walls of porousmetallic material having a rarefraction space therebetween, a layer ofsoft rubber com ound on the inner and outer surfaces o said walls, and alayer ofV hard rubber compound covering the 'Inner and outer surfaces ofsaid soft rubber compound, and the whole being vulcanized in place,whereby thesaid porous metallic material will be hermetically sealed. Y

In testimony whereof I affix my signature.

FRANK L. RANDALL.

